When the temperature of the area being written is raised in this way above the Curie temperature, the magnetic medium effectively loses much of its coercivity, so a realistically achievable magnetic write field can write data to the medium.
12.
Degaussing indiscriminately removes not only the stored data but also the servo control data, and without the servo data the device is no longer able to determine where data is to be read or written on the magnetic medium.
13.
A manager at another retail store, who declined to be identified by name, said most of the problems he'd heard of had been with flawed diskettes, which was to be expected because diskettes are a magnetic medium as opposed to CD-ROMs, which are read by lasers.
